Patent EP-2530820-A1 (EP)
Inventor: WALLMEIER PETER
IPC: C01B33/035
Filed: 2011-06-01
Abstract: Assembly comprises an inverter for generating alternating current from direct current, a current transformer (60) for transmission of alternating current from a primary side to a secondary side, and at least one capacitor for filtering a voltage applied on at least an output of the assembly with a frequency of less than 2 kHz. The inverter is suitable and adapted for generating the alternating current with a frequency of 2-250 kHz. The current transformer is a high-current transformer for the transmission of the alternating current from the primary side to the secondary side. Assembly comprises an inverter for generating alternating current from direct current, a current transformer (60) for transmission of alternating current from a primary side to a secondary side at a nominal voltage of 0-700 V on the primary side in flow with a nominal current of 0-1500 A at a voltage of 0-100 V on the secondary side of high current transformer, and at least one capacitor for filtering a voltage applied on at least an output of the assembly with a frequency of less than 2 kHz, where (i) a first terminal of the output of the inverter is connected with a first terminal of the primary side of the current transformer, (ii) a second terminal of the output of the inverter is connected to a second terminal of the primary side of the current transformer, (iii) a first terminal of the secondary side of the current transformer having a first terminal of the capacitor and a second terminal of the capacitor is at least indirectly connected to a first terminal of the output in at least a first branch, (iv) a second terminal of the secondary side of the current transformer is at least indirectly connected to a second terminal of the output in at least a second branch, and (v) the first terminal of the secondary side of the current transformer is connected directly and without interposing an electrical line with the first terminal of the capacitor. The inverter is suitable and adapted for generating the alternating current with a frequency of 2-250 kHz. The current transformer is a high-current transformer for the transmission of the alternating current from the primary side to the secondary side having a nominal current of 300 A on the primary side. The terminals of the primary side are guided out on a first side of the high-current transformer, and the terminals of the secondary side are guided out on a second side of the high-current transformer. The inverter is arranged on the first side of the high-current transformer and the capacitor is arranged on the second side of the high-current transformer. An independent claim is also included for a power supply device comprising the assembly for converting and an assembly for supplying a low frequency alternating current with a frequency of 40-70 Hz, having at least one output that is arranged parallel to the series connection of the outputs of the assembly for converting, where terminals of the output of assembly for supplying low frequency alternating current is connected with the first terminal of one of the outputs of the assembly for converting.